[Qemu-devel] [PATCH 15/15] Move definition of HOST_LONG_BITS to qemu-common.h

[Stefan Weil <sw@weilnetz.de>]

Like the related macro TCG_TARGET_LONG, HOST_LONG_BITS can be determined
by the C preprocessor. It is also not used in Makefiles.

So there is no need to calculate it in configure, and it can be defined
in qemu-common.h.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
---
 configure     |   12 ------------
 qemu-common.h |    9 +++++++++
 2 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/configure b/configure
index d9dde96..9ae85be 100755
--- a/configure
+++ b/configure
@@ -1291,17 +1291,6 @@ esac
 
 fi
 
-# host long bits test, actually a pointer size test
-cat > $TMPC << EOF
-int sizeof_pointer_is_8[sizeof(void *) == 8 ? 1 : -1];
-EOF
-if compile_object; then
-hostlongbits=64
-else
-hostlongbits=32
-fi
-
-
 ##########################################
 # NPTL probe
 
@@ -2988,7 +2977,6 @@ fi
 if test "$bigendian" = "yes" ; then
   echo "HOST_WORDS_BIGENDIAN=y" >> $config_host_mak
 fi
-echo "HOST_LONG_BITS=$hostlongbits" >> $config_host_mak
 if test "$mingw32" = "yes" ; then
   echo "CONFIG_WIN32=y" >> $config_host_mak
   rc_version=`cat $source_path/VERSION`
diff --git a/qemu-common.h b/qemu-common.h
index c5e9cad..dbfce6f 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -65,6 +65,15 @@ typedef struct Monitor Monitor;
 #define TIME_MAX LONG_MAX
 #endif
 
+/* HOST_LONG_BITS is the size of a native pointer in bits. */
+#if UINTPTR_MAX == UINT32_MAX
+# define HOST_LONG_BITS 32
+#elif UINTPTR_MAX == UINT64_MAX
+# define HOST_LONG_BITS 64
+#else
+# error Unknown pointer size
+#endif
+
 #ifndef CONFIG_IOVEC
 #define CONFIG_IOVEC
 struct iovec {
-- 
1.7.9